blob: 658de9b6540dfa5a33d3a5cc573db506b27c498e [file] [log] [blame]
/*
* This file is part of the coreboot project.
*
* Copyright (C) 2011 Advanced Micro Devices, Inc.
* Copyright (C) 2014 Edward O'Callaghan <eocallaghan@alterapraxis.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
/* Pre-RAM driver for the SMSC KBC1100 Super I/O chip */
#include <arch/io.h>
#include <device/pnp.h>
#include <stdint.h>
#include "kbc1100.h"
static void pnp_enter_conf_state(pnp_devfn_t dev)
{
u16 port = dev >> 8;
outb(0x55, port);
}
static void pnp_exit_conf_state(pnp_devfn_t dev)
{
u16 port = dev >> 8;
outb(0xaa, port);
}
void kbc1100_early_serial(pnp_devfn_t dev, u16 iobase)
{
pnp_enter_conf_state(dev);
pnp_set_logical_device(dev);
pnp_set_enable(dev, 0);
pnp_set_iobase(dev, PNP_IDX_IO0, iobase);
pnp_set_enable(dev, 1);
pnp_exit_conf_state(dev);
}
void kbc1100_early_init(u16 port)
{
pnp_devfn_t dev;
dev = PNP_DEV(port, KBC1100_KBC);
pnp_enter_conf_state(dev);
/* Serial IRQ enabled */
outb(0x25, port);
outb(0x04, port + 1);
/* Enable keyboard */
pnp_set_logical_device(dev);
pnp_set_enable(dev, 0);
pnp_set_iobase(dev, PNP_IDX_IO0, 0x60);
pnp_set_iobase(dev, PNP_IDX_IO1, 0x64);
pnp_set_irq(dev, 0x70, 1); /* IRQ 1 */
pnp_set_irq(dev, 0x72, 12); /* IRQ 12 */
pnp_set_enable(dev, 1);
/* Enable EC Channel 0 */
dev = PNP_DEV(port, KBC1100_EC0);
pnp_set_logical_device(dev);
pnp_set_enable(dev, 1);
pnp_exit_conf_state(dev);
/* disable the 1s timer */
outb(0xE7, 0x64);
}